Your code with the commented-out lines removed and some comments added:
URL = uigetdir('C:\_Daten\Messungen 3.5.2022\');
appraisers = dir(URL);
appraisers(1:2) = []; % buggy attempt to remove the dot directory names
counter = 0;
measurements = dir(URL);
measurements(1:2) = []; % another buggy attempt to remove the dot directory names
rowscounter=41;
for s = 1:rowscounter
file=fullfile( URL, measurements(s,1).name);
fid = fopen( file ); % file opened but never closed
wellenlaenge = fgetl(fid); % reads one line
wellenlaenge = sscanf(wellenlaenge,'%s');
wellenlaenge = strrep(wellenlaenge,',','.');
wellenlaenge = sscanf(wellenlaenge,'%f');
stringData = fscanf(fid,'%s'); % reads... whatever
stringData = strrep(stringData,',','.');
data = sscanf(stringData, '%f');
data = data';
reflect(s,:)=data(:,1:125);
end
What is the expected result of repeatedly opening the file inside the loop (without closing it)? Why not open it once before the loop? (of course closing it after the loop).
What does the variable name rowscounter mean? It does not seem to be related to anything about the file rows.
For robust removal of dot directory names use SETDIFF or ISMEMBER, or in your case by simply defining the DIR search string to include the filename (with wildcards as required) and file extension.
Your file looks like this:
What is the expected output from this file?
